Hello Café,

Using stack, I've tried stack install ghcide, it reported to put the following into my global extra-deps:

- haskell-lsp-0.17.0.0@sha256:ddfcc2798f04bcb1ec20fafc02c03faa197322192578e879cef5852aba43ebcb,5264

- haskell-lsp-types-0.17.0.0@sha256:9078237412d0596a7d09d432389c8fa21d6f3e21ed2ed761b3093a21607d6c28,2941

- hie-bios-0.2.1@sha256:5f98a3516ce65e0a3ffd88bf6fb416b04cc084371d0fbf0e1762780de1d652ce,3219

- rope-utf16-splay-0.3.1.0@sha256:15a53c57f8413d193054bb5f045929edae3b2669def4c6af63197b30dc1d5003,2029

Nevertheless, the build failed anyway:

stack install ghcide

ghcide> configure

ghcide> Configuring ghcide-0.0.4...

ghcide> build

ghcide> Preprocessing library for ghcide-0.0.4..

ghcide> Building library for ghcide-0.0.4..

ghcide> [ 1 of 33] Compiling Development.IDE.Core.Debouncer

ghcide> [ 2 of 33] Compiling Development.IDE.Core.PositionMapping

ghcide> [ 3 of 33] Compiling Development.IDE.GHC.Compat

ghcide> [ 4 of 33] Compiling Development.IDE.GHC.CPP

ghcide> [ 5 of 33] Compiling Development.IDE.Spans.Type

ghcide> [ 6 of 33] Compiling Development.IDE.Types.Location

ghcide> [ 7 of 33] Compiling Development.IDE.Types.Diagnostics

ghcide> [ 8 of 33] Compiling Development.IDE.LSP.Protocol

ghcide> [ 9 of 33] Compiling Development.IDE.GHC.Util

ghcide> [10 of 33] Compiling Development.IDE.GHC.Orphans

ghcide> [11 of 33] Compiling Development.IDE.Import.DependencyInformation

ghcide> [12 of 33] Compiling Development.IDE.GHC.Error

ghcide> [13 of 33] Compiling Development.IDE.Import.FindImports

ghcide> [14 of 33] Compiling Development.IDE.GHC.Warnings

ghcide> [15 of 33] Compiling Development.IDE.Core.Preprocessor

ghcide> [16 of 33] Compiling Development.IDE.Core.RuleTypes

ghcide> [17 of 33] Compiling Development.IDE.Types.Logger

ghcide> [18 of 33] Compiling Development.IDE.Types.Options

ghcide> [19 of 33] Compiling Development.IDE.Core.Shake

ghcide>

ghcide> /tmp/stack204611/ghcide-0.0.4/src/Development/IDE/Core/Shake.hs:106:5: error:

ghcide> • No instance for (Control.Monad.Fail.MonadFail Rules)

ghcide> arising from a do statement

ghcide> with the failable pattern ‘Just x’

ghcide> • In a stmt of a 'do' block:

ghcide> Just x <- getShakeExtraRules @ShakeExtras

ghcide> In the expression:

ghcide> do Just x <- getShakeExtraRules @ShakeExtras

ghcide> return x

ghcide> In an equation for ‘getShakeExtrasRules’:

ghcide> getShakeExtrasRules

ghcide> = do Just x <- getShakeExtraRules @ShakeExtras

ghcide> return x

ghcide> |

ghcide> 106 | Just x <- getShakeExtraRules @ShakeExtras

ghcide> | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ghcide>

-- While building package ghcide-0.0.4 using:

/home/kolar/.stack/setup-exe-cache/x86_64-linux-tinfo6/Cabal-simple_mPHDZzAJ_2.4.0.1_ghc-8.6.3 --builddir=.stack-work/dist/x86_64-linux-tinfo6/Cabal-2.4.0.1 build --ghc-options " -fdiagnostics-color=always"

Process exited with code: ExitFailure 1

Does that mean the ghcide is broken? Or am I doing something wrong?

Best regards,

Dusan